Enterprise-grade traffic management for APIs
Every API request,
one hop from the user.
AnyLB sits in front of your HTTP/HTTPS origins and serves traffic from Cloudflare's global anycast network. Latency-aware scheduling picks the fastest healthy origin, reroutes failures in under a second, and records every request so you can prove what happened.
Free tier includes 1 zone and 100 GB of traffic. No credit card required.
- 330+
- Edge cities
- < 1s
- Failover time
- 99.99%
- Uptime SLA
Sits between your users and the stack you already run
- Kubernetes
- Terraform
- GitHub Actions
- Prometheus
- Grafana
- Datadog
- OpenTelemetry
- Slack
- PagerDuty
- Okta
No agents to install, no origin changes, no vendor lock-in.
Core capabilities
Three things we do better than anyone
AnyLB is deliberately narrow. It does HTTP/HTTPS load balancing for APIs, and it does the hard parts properly.
Requests terminate at the closest edge
Anycast routing answers from the point of presence nearest to your user — typically under 50 ms away. AnyLB then selects the origin with the best live latency instead of a static weight.
- 330+ cities across 125+ countries
- Latency-aware selection, not round-robin
- Sticky sessions and consistent hashing
- sin → api-sin118ms
- fra → api-fra124ms
- iad → api-iad131ms
- gru → api-iad146ms
Failover measured in seconds, not minutes
Active probes from multiple regions check every origin every two seconds. When a node degrades, AnyLB drains it and redistributes traffic in under a second — no DNS TTL wait, no on-call page.
- Sub-second drain and reroute
- Circuit breaking with retry budgets
- Zero-downtime deploys and maintenance windows
- T+0iad-1 returns 503
- T+2.0sprobes confirm, origin drained
- T+2.4straffic shifted to sin-1
Every request, traceable end to end
Each request records status, upstream latency, edge region, cache state and the complete retry chain. Stream to your SIEM in real time, or query 30 days of history straight from the console.
- Real-time streaming to SIEM and object storage
- Per-request trace with the full retry chain
- 30-day queryable retention, export any time
How it works
Live in four steps, managed from one control plane
No load balancer appliances, no cross-region peering projects, no per-region runbooks.
- 01
Point your domain
Change a single CNAME record. AnyLB issues edge certificates and starts serving traffic within minutes.
- 02
Register your origins
Add origin addresses per environment and attach a pool. Health checks start probing immediately.
- 03
Pick a strategy
Latency, weighted, geo or failover-only. One configuration applies in every region at once.
- 04
Observe and tune
Dashboards, alerting and per-request logs close the loop between change and impact.
By the numbers
Engineered for the p99 you promised your customers
Numbers that come from the network underneath AnyLB, not from a marketing deck.
- 330+
- Edge cities in Cloudflare's network
- < 1s
- Detection-to-reroute on origin failure
- 99.99%
- Uptime SLA on Business plans and above
- 30 days
- Queryable per-request log retention
AnyLB vs. a classic load balancer
What changes when the edge is the balancer
A traditional load balancer is a machine you operate. AnyLB is a network that already reaches your users.
Traffic entry point
- Traditional load balancer
- One region, often one cloud
- AnyLB
- Cloudflare anycast across 330+ cities
Failover mechanism
- Traditional load balancer
- DNS TTL, typically 60–300s
- AnyLB
- Sub-second, independent of DNS TTL
TLS certificates
- Traditional load balancer
- Manual ACME plus renewal on-call
- AnyLB
- Managed edge certificates, auto-renewed
Per-request visibility
- Traditional load balancer
- Aggregated metrics and sampled traces
- AnyLB
- Full logs with upstream and retry chain
DDoS mitigation
- Traditional load balancer
- Bolt-on appliance and extra capacity
- AnyLB
- Included L3–L7 mitigation at the edge
Operational overhead
- Traditional load balancer
- HA pairs, patching, capacity planning
- AnyLB
- Fully managed control plane
Global rollout
- Traditional load balancer
- Weeks per region, per-region runbooks
- AnyLB
- Minutes, one config everywhere
Quick setup
Three steps to live, and every change lands in seconds
There is no agent to install and no infrastructure to run. Point AnyLB at your origin, pick a strategy, switch one CNAME — after that every edit reaches the whole edge fleet in seconds, with no redeploy and no dropped connections.
- 1
Point at your origin
Give AnyLB an IP or a hostname. Health checks start on their own — nothing runs inside your infrastructure.
- 2
Pick a strategy
Nearest edge, weighted, or active-passive failover. The defaults are already production-ready, so you can ship before you tune.
- 3
Switch one CNAME
Point your hostname at the AnyLB edge domain. No certificate to move, no DNS propagation to wait on.
The console, Terraform, the CLI and the API all edit the same configuration.
+ strategy: weighted- sin1
- iad1
- fra1
- nrt1
- gru1
- syd1
- lhr1
- sfo1
Every edge region picks up the new configuration at the same moment. No process restarts, no connection is dropped, and the previous version is one click away.
Pricing
Start free. Scale without re-platforming.
Every plan runs on the same edge network with the same routing engine. You pay for zones, traffic and retention.
Starter
For side projects and the first production API.
Free forever
- 1 zone, up to 2 origins per pool
- Round-robin and failover-only strategies
- Automatic edge TLS certificates
- 3-day log retention
Business
For platform teams running customer-facing APIs.
per zone, billed monthly
- 5 zones, unlimited origins
- Latency-aware and geographic routing
- Sub-second automatic failover
- 30-day log retention with export
Enterprise
For regulated and multi-region global rollouts.
annual contract
- Unlimited zones and origins
- Dedicated IPs and custom hostnames
- Custom health checks, weights and retry budgets
- Unlimited retention in your own object storage
Put your APIs one hop away from every user
Deploy your first load balancer in five minutes. Keep the free tier as long as you like, or talk to us about a global rollout.
Free tier · No credit card · Cancel any time